Oil-well casing-head.



PATENTED FEB. '7, 1905.

J. W. GLENN.

OIL WELL CASING HEAD.

APPLIOATION rum: sm'rv 29. 1904,

Patented February 7, 1905.

JOHN W. (ILENN, OF LIMA, OHIO.

OIL-WELL CASlNG-HEAD.

SPECIFICATION forming part of Letters Patent No. 782,127, dated February 7, 1905. Application filed September 29, 1804. Serial No. 226,521.

'/n all whom it may concern.-

Be it known that I, JOHN W. GLENN, a citi' zen of the United States, residing at Lima, in the county of Allen, State of Ohio, have invented a newand useful Improvement in Appliances Known as Casing-Heads,of which the following is a. specification.

My invention relates to improvements in oil-wcll casing-heads, and more particularly to a tube-support therefor.

ihe object of my invention is to provide a simple, durable, and inexpensivedevice of this character which will prevent Lie tube from dropping into the well in case of the breakage of the standing pipe and which 'will dispense with one joint or opening where gas may escape, and thus reduce the amount of packing required The above and other objects, which will appear as the nature of my invention is better understood, are accomplished by means of the construction illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of a easing-head constructed in accordance with my invention. Fig. 2 is a vertical sectional view through the same; and Fig. 3 is a detail sectional view through the standing pipe, the well-tubing, and connecting sleeve or coupling.

Referring to the drawings by numeral, 1 denotes the upper end of the well-casing pipe, which is externally screw-threaded, as at 2, to receive the internally-screw-th-readed lower end 3 of the casing 4. The latter is of cylindrical form and has its upper end formed with an annular recess or groove 5, which formsa seat for the cap 6 of the casing-head. Said head 4 is formed intermediate its ends with one or more gas-outlets 7.

Extending through an opening-8, formed in the center of the casing-head cap 6, is acoupling-sleevc 9, which unites the lower end of the standing pipe and the upper end of the well-tube 11. This coupling-sleeve 9 is preferably of cylindrical form and has its upper and lower ends internally screw-threaded, as at 12, to receive the externally-screw-threaded ends of said pipe 10 and well-tube 11. At the upper end of the coupling-sleeve 9 is 5 formed a laterally-extending annular shoulder 13, which is adapted to seat upon the easing-head cap 6 to prevent the tube 11 from falling into the well in case of the breakage of the pipe 10.

A suitable packing may he provided be-' tween the cap 6 and its seat 5 and between the coupling-sleeve 9 and the opening 8, through which it extends.

The construction, use, and advantages of my invention will be readily understood from the foregoingdescription, taken in connection with the accompanying drawings. It will be seen that the sleeve 9 forms a simple, durable, and inexpensive connection between the standing pipe and the well-tube and will cfiectively prevent the letter from falling into the well in case the former should become broken.

Various changes in the form, proportion, and the minor details of construction maybe resorted to without departing from the prim ciple or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a device of the character described, the combination with a tubular well-casinghaving a screw-threaded upper end, of a casing-head formed with an internally-scrcwthreaded lower end to engage the screw-threads on the 0 well-casing, gas-outlets intermediate its ends and an interior annular shoulder at its upper end, a cap seated upon said annular shoulder and having a centrally-disposed opening, a standing pipe and a well-tubing threaded at 5 their contiguous ends, and a coupling-sleeve extending through the opening in said cap and formed with interiorly-screw-threaded ends to receive the threaded contiguous ends of said standing pipe and said well-tubing, and 9 a laterally-projecting annular shoulder formed integral with said coupling member and adapted to seat upon said cap, substantially as described.

In witness whereof I have hereunto set my hand, at Lima, Ohio, in the presence of two subscribing witnesses,this 12th day of September, 1904.

JOHN W. GLENN.

In presence of- DALPHNE AXLINE, D. O. Hnnnnnson. 

